My search results are only showing 5 posts?

You are using the Divi theme. If you want to change the number of posts showing on archive, search, category pages, you will need to make the change in theme options. Use a value of -1 to show all posts.

How can i put php code on the wordpress page?

I think using the user_registration hook is probably the best fit for what you want to do. An example from the docs: add_action( ‘user_register’, ‘myplugin_registration_save’, 10, 1 ); function myplugin_registration_save( $user_id ) { if ( isset( $_POST[‘first_name’] ) ) update_user_meta($user_id, ‘first_name’, $_POST[‘first_name’]); } To be compliant with the WordPress way (and be less likely to … Read more